We describe the all-sky Planck catalogue of clusters and cluster
candidates derived from Sunyaev-Zeldovich (SZ) effect detections using
the first 15.5 months of Planck satellite observations. The catalogue
contains 1227 entries, making it over six times the size of the Planck
Early SZ (ESZ) sample and the largest SZ-selected catalogue to date. It
contains 861 confirmed clusters, of which 178 have been confirmed as
clusters, mostly through follow-up observations, and a further 683 are
previously-known clusters. The remaining 366 have the status of cluster
candidates, and we divide them into three classes according to the
quality of evidence that they are likely to be true clusters. The Planck
SZ catalogue is the deepest all-sky cluster catalogue, with redshifts up
to about one, and spans the broadest cluster mass range from (0.1 to
1.6) � 10<SUP>15</SUP> M<SUB>&sun;</SUB>. Confirmation of cluster
candidates through comparison with existing surveys or cluster
catalogues is extensively described, as is the statistical
characterization of the catalogue in terms of completeness and
statistical reliability. The outputs of the validation process are
provided as additional information. This gives, in particular, an
ensemble of 813 cluster redshifts, and for all these Planck clusters we
also include a mass estimated from a newly-proposed SZ-mass proxy. A
refined measure of the SZ Compton parameter for the clusters with X-ray
counter-parts is provided, as is an X-ray flux for all the Planck
clusters not previously detected in X-ray surveys.
The catalogue of SZ sources is available at Planck Legacy Archive and <A
href="http://www.sciops.esa.int/index.php?page=Planck_Legacy_Archive&project=planck">http://www.sciops.esa.int/index.php?page=Planck_Legacy_Archive&project=planck</A>

We describe the all-sky Planck catalogue of clusters and cluster
candidates derived from Sunyaev-Zeldovich (SZ) effect detections using
the first 15.5 months of Planck satellite observations. The catalogue
contains 1227 entries, making it over six times the size of the Planck
Early SZ (ESZ) sample and the largest SZ-selected catalogue to date. It
contains 861 confirmed clusters, of which 178 have been confirmed as
clusters, mostly through follow-up observations, and a further 683 are
previously-known clusters. The remaining 366 have the status of cluster
candidates, and we divide them into three classes according to the
quality of evidence that they are likely to be true clusters. The Planck
SZ catalogue is the deepest all-sky cluster catalogue, with redshifts up
to about one, and spans the broadest cluster mass range from (0.1 to
1.6) � 10<SUP>15</SUP> M<SUB>&sun;</SUB>. Confirmation of cluster
candidates through comparison with existing surveys or cluster
catalogues is extensively described, as is the statistical
characterization of the catalogue in terms of completeness and
statistical reliability. The outputs of the validation process are
provided as additional information. This gives, in particular, an
ensemble of 813 cluster redshifts, and for all these Planck clusters we
also include a mass estimated from a newly-proposed SZ-mass proxy. A
refined measure of the SZ Compton parameter for the clusters with X-ray
counter-parts is provided, as is an X-ray flux for all the Planck
clusters not previously detected in X-ray surveys.
The catalogue of SZ sources is available at Planck Legacy Archive and <A
href="http://www.sciops.esa.int/index.php?page=Planck_Legacy_Archive&project=planck">http://www.sciops.esa.int/index.php?page=Planck_Legacy_Archive&project=planck</A>